Torch



.5 m5 NM f. A

2 Sheets-Sheet 1 TORCH Filed April 27, 1936 A. J. FAUSEK El' AL IIL' Feb. 13, 1940.

Feb. 13, 1940. A. J. FAusEK Er Ax. 2,190,356

TORCH Filed April 27, 1936 2 sheets-'sheet 2 Agv PatentedvFehvy-IS; I

i' v,uf-N1'frito@ STATES TORCH v lArthur J; Fausekfan'dilrwing F." Fausek,

Clayton, M0.

"Application Apro 2v, 1936.' serial No. '76,551`

e 1 claim. (C1. 15s- Actor AThis invention relates' generally totorches, and `vmore specifically to gas-burningtorches, animportantobject` of l the yinvention being to provide a torch'of this.y type-1 with rotary cut-olf means L5 operablein a vmanner to cut offthe supply of fuel gasl and oxygento the nozzle. of the torch when inthe use of the improved torch it is* desired to f temporarily extinguisher. diminish ther flame at the nozzle of the. torch.l g

yentionis to .provide an improved mixer forv the fuel gas, and oxygen which'is commingled to pro- ',m Another importantrvobjectof .the presentxin- "duce a. combustible mix-cure that is burned etnie nozzle of ages-burning torch.K4 fAmong'the varision civ spirallyv arranged.. passageways through Ywhich the fuel' gas and oxygen move just prior `tocomnflingling of said fuel gas and oxygen. Because of the provision of the spiral passageways 'girevented,v and additionally,y whirling motion is in nnarted-to the fuel gas and oxygen `which aids .in complete admixture. of saidi'uel gas and oxygen when .theyare' broughtgin Still another important f 'ature of the invention fis the construction and arrangement of the han- ."ldleportion' of the torch-which includesl fuel gas` andy oxygenpassageways that are drilled throughy said; hamile Aportion from zend to end tllereof,l

' andwhich are so combined vwith the' rotary cut- "hoff fme'ans Vof e the -torch as to provide for?. the control of the-'flow offuel gas and oxygen through "saidfpassagewayst l e e i e y .3g ,1 Fig. yi is Aaside elevationv of the improved torch.

* iFig. h2 is anl enlarged, fragmentary, A longitudinal section tlfiroughthe torch illustrating the ro` cut-off `means Aand the mixerther'eof.

3 i'saview similar to Fig. 2, but on a l 'htly reduced scale,` and illustrating-more of i=the`hanaieportion-0f 'the torch.y

'Fi'gdl Iis a cross-section taken ron linee-.Ji of Fig.,5 is a `cross-se ation taken `on 4line 5-1-5 of g 2. y

Fig; 6` is a'` fragmentary, sectional View of.` a

portionof thetorch. illustrating narts ofthe jmixer thereof.;

Fig? is crossfsection taken Online '1T-l ofl mentioned, backring. of the torch is` effectively v to `mixingy Contact 25",with leach other withinthemixer. i ways which provide a y die portion" -B valvel A.cavity terminates at y l e portion. At the side ofthe handle portionof ithe Fig. il is a fragmentary, vertical sectiontaken throughhthe structure illustrated in lig,l l0.

Fig. l2is a fragmentary, horizontal, sectional 5 view througha torch illustrating yet another'y form of rotary cu toi means.

PATENT:OFFICE View through 1a. toren. inustraung stili another., form of rotary cut-olf means.V

Fig. 13 is a fragmentary, verticalsection taken` I through the structure illustrated in Figr12. v e

Fig. 14 isan elevation looking at the-facev'ovf a 10 .y rotary element of the f cut-off means.

In .the drawings, wherein are shown for. the purpose of illustration, merely, several embodiments of the'invention, A designates the improved portion B, a mixer structure C attached tosaid handle .portion at its forward end, a discharge conductor Dextended forwardlyfrom said mixer structure, and a. nozzle E at the outer endrofsaid f discharge conductor.

`torch generally. The torch A comprises a handle 15 rThe handle'portion B 'of thetorch-A is ofzsolid :20

construction, as shown to the best advantage in Figs. 2 and 3, and formed longitudinally through fuel' gas." I n like manner the handlefportion-B' municating passageways which provide aflport `2l ysaid handle portion `are communicating-passageport l for the passageof 25` l hasl formed longitudinally .therethrough com- 'j i lfor'tvhe passage of oxygen. An important feature Y of the invention is that by employing for passageof fuel gas and oxygen' may be drilled through said handle portion..r At the tail end of the handle .portionscrew-threaded extensions I l.and 21 are provided `which receivesuitable cou- 35i p-ling devices (not shown) for vattaching to the" torch flexible conductors through which fuel gas `portion of 'solid construction the 'ports' land 2 A andoxygen 'are conducted from containersto .the

torch. yAlso adjacent tothe tailjendv of the hanthrough the'ports [I andi, a valve mechanism 3 valve mechanism 4 being associated with` the oxy gen port 2.V i r of the torch. adjacent to theforward endthereof isfa cavity 5. This cavity isyopen atene side fof.

e mechanisms are loro'vicvledy 4 for regulatingpassage of fuel gas and oxygen being associated with the fuel gas port land a ,Formed transversely of the handle-portion B the .handle portion ofthe torch, as shownto the] bestadvantagein r 8 and at its inner end the 50 a wan c Within meneame" torchopposite to the side at which the" cavityi's Y,

open a shallow cavity `lis formed, the Wall `of this cavity being screw-threadedasshownlin Fig. im;

l NN

kthat the insert I0 `is provided with a pair of `passagewaysl I3 and I4 which constitute parts 'of-the oxygen port formed longitudinally through to .cause other.

- ber IS, ythe insert 8 so as toscrew-threadedly receive a cap 9 which serves a purpose to be hereinafter set forth.

Seated in the cavity` 5 is an insert It, which preferably is formed of relativelyhard material. This insert may be secured in place within the cavity 5 in various ways. For instance, when the insert is of constant diameter as shown in Fig. 8, it `may be treated, prior to being arranged in place within the cavity," so as to shrink the insert, after which it is arranged within the' cavity and is permitted to resume its normal dimensions. In this manner a binding action is set upz. between the insert andthe wall of the cavity,v Also,v ifpreferred, a cavity 5 of tapered formationmay be employed as shown in Fig. 9, into which a i..

which securely retains the insert in place.

correspondingly tapered insert I9' may be forced tol the shapes of the cavityr 5 and the insert It. For instance, the insert III of Fig. 9. includes a screw-threaded extension II that receives a disk I2 which closes the smaller end of the cavity 5 .and prevents displacement of the insert from the cavity. Also thisv disk is exteriorly screw-threaded land it screw-threadedly receives van interiorly screw-threaded cap 9.

By referring to Figs. 2 and 3 it will be noted the handle portion of the torch. Also this in-l sert is provided with a pair of passageways I5 and I5, which constitute' parts of the fuel gas port of the torch. It will benoted that the associated` passageways I3` and I4 and the associated passageways l5 and I6 are out of communication with each other. The rotary cut-off `means of the torch of which the insert IB forms a part includes also an element II, which isfsupported for rotary movement by a bolt I8. `This element has fixed tol it a facing m'ember I9 formed of suitable material (seeFig. 8) pro- -vided with a tapered inner portion, which is seated in a correspondingly shaped cavity' 2B formed in the insert I0. The facingmember vI9 is provided with passageways 2l and 22 which are formed in the inner face of said facing member, and these passageways are movable into and out of positions where they place the associated passageways I3 and I d and the associated pas. sageways I5 and I6 in communication with each :The bolt I8 passes through openings formed through the element I 1, the facing mem" I Il, and the wall 6, said bolt `having a head I8' at one end which contacts with the outer face of the element II, asshown vin Fig. 8, and being provided at its oppositeend with a nut 2| which is enclosed by the cap 9. Inorder to yieldingly hold the bolt I8 and the element Il with its associated facingmember in their proper assembled relation, a dish-shaped element 22, formed of suitable resilient material,

is interposed between the nut and the vouter face This element 22 tends to draw ofthe v Wall G.

: the tapered face of the facing member intof close 'faces'iof the facing member I9 working contact with the correspondingly rshaped face of the insert m. It will be noted that the structure illustrated in Fig. 9 differs from the structure of Fig. 8, inasmuch as the contacting and the insert ID of Fig. 9 are flatinstead oftapered as in Fig. 8. in order to' provide .for Convenient rothe insert to be securely fixed in place within the cavity. I t will be noted that the `struolture illustrated in Fig. 9 differs from the struc- I ture of Fig. 8 in respects other than with regard .Y 3?,.as shown in Fig.

. tationfof the nement I1 withits associatedfac- I ing memberA I9, an arm 23` is provided. Thisjarm-H."

face of the rotatablev elementv place by the bolt I8.

, is seated in a depression/24 formed in thesouterr v i I1 and is heldin Also,.the arm 23 has rhired* to its outer end a knurled thumb piece'25 which overhangs theV handle portion of the torch.

By referring to Figs. 2 and 3 it will -be noted that the' forward end of the .handle 'portion/B f of the torch A is exteriorly screw-threaded,l vas,

indicated at 2t, and that "said, forward end of said handle portion is provided with a cavity 27.A g` having a tapered forward wall'portion 23.k Also.r this cavity communicates withapassageway 29'3 which opens into the cavity 5 in which the .rok-A tary cut-olf meansy of the torch is disposed, lsaid opening 29 being provided with ,a taperedyforward wall portion 3U.

Disposed adjacent to the forward end offtheu handle ,portion ,of thevtorch andy rin .part within. thecavity 21 andthe passageway 295 formed therein is the mixer of the improved 'torch.'-` The;, i*

mixer includes ahead portion 3 I whichis proF'-,`

vided with'a tapered circumferential facezthat contacts with the tapered wall portion 23'at the forward endof-th'e cavity 2].. The `head portion dI includes alsoan ,extensionil which projects" rearwardly. vand is provided with a tapered, .an- .with the tapered The forof reducedv `v v diameter, is provided with external screwthreads 35, and an annularface 36 providing an abut-T .this screw-1. threaded portionl of the head. Formed vcentrali-f ly through ,the he'ad 3l is a passageway 31-Lwhich'f yforms a part yof the .oxygenl through the torch', andsaid passageway ,31g` communicates with the. passageway 29 formed inthe portion Aofnthe nular face 34 that` contacts wall portion llof thepas'sageway 29. ward portion of the head 3l', which is ment is located at the rear Lend of forward portion of the handleI n l torch. .At the forward end'of vthe headl 3 Ithe pasL rear and yfront ofthehead. p n n. Screwed into the screw-threaded forward-'po tion of the central passageway 3'I"fo1med` through the head 3l is the screw-threadedl rearV i which forms j a'v part end portion' of stem III of the mixer.

provided with a portion 42 of rslightly increased 42 is tapered, as showntudinallytherethrough which is end of said stem, said forwardly to a .point 42 ofthe stem (seeFig. 6),. to theforward face oflthe' of the stem.

Formed on the stern'flI ranged" ribs d5.

The stem 4| atmegforwardjendif ofthe rear screw-threadedportion thereofi is* sageway 3 7 communicates witha iiai'ed opening f 38, and rearwardly of.saidflaredopeningthe pasl-A f sageway is provided. vvwith. scrc-:fvvthreads;JSILLl Formedthrough thefhead 31| is. acircular row of passageways dll, saidrow of. y'pas'sagewaysj` being disposed so as to surround the central passageway 4, and.;A being open, atlffthe ij walls ofthe 'main body. portion n forwardly' ofthefe.- 'largedportion' 42 is a pluralityiof spirallyIa-r-l The portion of the stemvon'fffk which the' spiral ribs 45* are formed isoflfvery slig'htlygreater diameter than theV portion of' vtorch is. 'ag sleeve 48 which is` provided with af tapered wall portion 49 at itsrrearv end. When themixeris in its 'assembled condition the tapered wallportion 49 thereof is interposed between and is'tightly gripped bythelface ofthe flaredv opening 38v at theA forward end of the passageway 3l formedthrough the mixer head 3l land itsexten sion 33, and the tapered rear face of the portion 42101 the stern 4ly (see Fig; 6).

. 'the sleeve is securely maintained in place. The

inner face of the sleeve contacts closely with the outer faces of vthe spiral ribs`45vformed on the stem," and on 'its outer face saidsleeve itself is provided with' similar spiral ribsy 50 which-extend longitudinallythereof (Fig. 3).""I'he' spiral ribs 50 extend, forwardly to a pointijin' approximate aline-ment with respect to the spiral ribs 45 of 'the stem, sok that, like the ribs45, the spiral ribs 590i the sleeve terminate short in a rearward direction of the 4non-circular or multi-faced head 46 of the stemof/the mixer, i

` Surrounding the forward portion of the ymixer parts thus k1farde'scribed `is a tubular element 5| which provides the chamber of the mixer. This tubular element has an enlarged,` linterorly screw-threaded lrear portion 52 vwhich screwthreadedly engages the screw-threaded forward portion of the head 3l of the mixer, the rear face of vsaid tubular .element contacting with the abutment face 35 of said mixerhead, as shown in Figs. 2 and 3.l The tubular element 5l` at ak point intermediate its endsis` provided with va non-circu lar or multiffacedportion 53, and at the extreme forward end of said tubular element an' interiorly screw-threaded boss portion 54is provided, into which the exteriorly screw-threaded rear end of the discharge/conductor Dis screwed. It is to be noted that the bore of the tubular element 5I is of varyingfdiameters; that is to say, the portion thereof enclosing the spirally ribbed portions of the mixer is of such diameter that the face of y said portion'contacts closely with the top faces of the spiral ribs formed onthe sleevey 4t. Forwardly of the portion referred to the diameter fof the bore ofthe tubular element is reduced vslightly to providev a portion that receives the non-circular or multi-facedvhead 46 of the stem of themixen' the cornersv of the various adjacent faces of said head contacting with the inner face element, `through which spaces gas-may pass.' In advance of the location of the head 45 ofthe stem of the mixer v the bore of Ithe tubular element 5lv is provided y with `an ass ciated pairof tapered portions extended in opposite directions, which vaid in obv'taining complete admixtureI of the fuelgas and oxygen as they passthroughi that portion of the tubular element.

i In `order, to secure themixert'o the handle por` tionfof the improved torch, we employ a coupling f. -member 55-'which is in the form of a nut having una non-circular' or multi-faced portion `Mi. Also 2 and 3, the headv 45 of the In this 'manner tile ring 'passageway 7:32' 'into the passageway 43 formed in the stem 4l of the ygen then passing provided between the spiral ribs 45 on the mixer the outerrface'of the,I coupling memberjrearwardly Iofthe multi-faced porti-on 5t is provided with a pluralityv of longitudinally extended; .outstanding ribs 51 which aid in securing a firmv gripr on the couplingmember when same is being rotatedtin securing the mixer to the handle portion of the torch. The coupling member 55 is provided with an internal abutment face 58 .which 'engages a Vcorrespoiniing external abutment face formed on thetub'ular element 5i, so that when. the vcoupling member is screwedy longitudinally of the screw-threads 25 of the handle portion the tu.-

bular element and the mixer parts associated therewith will be drawn'rearwardly into their proper assembled relation with respect to parts ofthe handle portion of the torch.

An' important feature of the invention is that the opening 5@ formed through the forward` portion of the coupling member 55 is of av multifaced shape corresponding to the shape of the L multi-faced portion 53 of the tubular element 5l of the mixer structure. Alsofthis opening 5&1Y is only slightly larger than the multi-faced portion 531 to permit of said opening passing over said multi-faced portion when the coupling member is being moved rearwardly of the tubular element into assembled relation with the mixerstructure. ByL making the opening 59 of approximately the same shape as the multi-faced portion 53 of the tubular element 5i, said portion 53 may be'made larger than it would vthe opening 59 were circular, as the various corners of the multi-faced portion 53m. .that case would have to come within the diameter of a circular opening and hence the entire Ymultiefaced portionv have tor be made smaller with smaller Yflat faces. The fact'that the opening 59 of the coupling memberv 55 is noncircular or multi-faced does not affect the even distribution of contact between the wall of said opening and the circular portion of the tubular element Eil which said opening surrounds when lthe coupling is drawn rearwardly `in its normal assembled position, as the circumferential facel of saidportion of the tubular Aelement contacts ywith the various flat faces of the opening 59, as

shown in'Fig. 5.` l

Inr order to retain the coupling member 55 in its position-adjacent to the rear end of the tubular element 5i that abutment faces within the coupling member and on the tubular element contact with each other, we provide the outer face of the .tubular element with an annular.

groove and seat .in this groove a split, contracof the coupling member with respectto the tubular element. v f

Whenin the use of the improved' torch disclosedherein they rotary cutoff is set so that the passageways and. 2i connectthe associated;y of the tubular element, andspaces 46 being present between the flat faces of said head and `the'inner faceof the tubular loassagt-:ways Ul and the associated passageways l5 andy lli formed in theinsert lil, oxywhen in place, acts as an abutment which prevents forward movement j gen passes forwardly through the port 2 tothe passa'aeiifay-d' in the mixer head 3l, andfuel gas passes forwardly through .the port l' into the .vity 2l" the forward end of the handle -porof the torch. The oxygen passes from the gularly disp portion of the int discharged at the forwardv ends stem and beit y Aof said spiral passageways.- Simultaneously the ist fuel gas passes from the cavity 21 through the ports formed in the mixer head 3|, andlthen moves through the spiral passageways between the spiral ribs 50 on the mixer sleeve 48 and is discharged at the forward ends of saidspiral passageways. When the fuel gas and oxygen are discharged at the forward ends of the spiral passageways formed by the spiral ribs and 50, said fuel gas and oxygen are thoroughly commingled due to the whirling motion imparted thereto by passage through the spiral passageways, and the combustible mixture produced by commingling the fuel gas and oxygen as described moves through the spaces between the flat faces of the multi-faced head 46 and the inner face of the tubular element 5I land passes forwardly through the discharge conductor D to the nozzle E of the torch, Where said combustible mixture is burned.

With respect to the spiral passageways of the mixer through which the fuel gas and oxygen pass, it is pointed out that the depth of the spiral passageways produced by the ribs 45 and the circumferential face of the stem ll of the mixer and the inner face of the sleeve 48 produces a thin, spirally moving sheet of fuel gas. Also, because of their spiral arrangement, the passage- `*ways are substantially long. This is true also `of the spiral passageways produced by the spiral ribs 50 and the circumferential face of the sleeve 48 and the inner face of the tubular element 5I,

. these spiral passageways being of such depth that thin, spirally moving sheets of oxygen are provided which are substantially long because of the spiral arrangement of the passageways. It has been found in actual practice that the spiral passageways for the fuel gas and oxygen effectively prevent'back-firing of the torch where the spiral sheetsl of gas and oxygen passing therethrough are thin and long, asthe back flash will not follow the shallow, long, spiral passageways.

In order to provide for a small pilot flame at the nozzle of the torch when the cut-01T means of the torch is shut off, we provide by-pass ports BI and G2 (Figs. 2 and 3) which lead from the fuel gas port to a screw-threaded cavity $3. Arrangedin the cavity 63is a regulating screw 64 which acts as a valve, said screw being provided with a tapered portion which enters the by-pass port 6i. 'I'he by-pass port 62 communicates also with a curved passageway formed inthe insert I0 which leads to the portion of the fuel gas'port forwardly of the cut-off means. Because of this arrangement a slight flow of fuel gas is maintained to the nozzle of the torch when the torch has been temporarily shut o through use of the cut-off means, and this slight iiow of fuel gas will burn at the nozzle of the torch to maintain a pilot light for re-igniting the torch.

Also the cut-0E means of the torch is so arranged that flow of fuel gas to the nozzle of the torch is cut off slightly later than the oxygen when the cut-off means is operated to shut 01T the torch, while said fuel gas is turned on slightly earlier than the oxygen when the rotary cutoff is moved to the open position. This arrangement eliminates back-firing within the forward)- part of the torch, which would entirely extinguish the ame at the nozzle of the torch.

torch with a sleeve insert 66 (Fig. l), which, if desired, may be formed of relatively hard material so as to increase the durability of the nozzle of the torch.

By preference we provide the nozzle of the By referring to Fig. 14 it win be noted that l.$3,190,356 in addition to the curved passageways 20andf2l for connecting the associated passagevs'lays|3-A` and I4 and I5 and l5 formedin the inserty I0 as already describedherein, the facing elementv I9 of the rotary elementl IT of the cut-01T vmeans is provided with openings 6l and lformed inthe face thereof. By this arrangement thevmore` or less sharp edges of the ends of the ports with which the facing element contacts are never'gin contact with the face ofsaid facing element when the cut-off means is in either the'open or closed of the facing element will be indentedby sus.- tained contact with said` facey of fthe` 'edges` of position, and therefore the .danger thatgthe'ifacey v ated ports 3 and I4 and l5 andl are, Aof' course, in communication with the curved passagewaysf 2i) and 2|, while when the cut-oifvmeansisgin ciated pair of p'orts of theiinsert l0 is at onefof the closed position the endL of one of each asso'- the curved passageways of the' facing velenlen't while the end of the otherof each pair of associated ports is `at one ofthe openings 6l' or. S8, whereby said associated portsgare sealed offby the material ofthe facing element locatedbetween the curved passageways and the openings 67 and 88. `7

In the form of the invention shown in Figs.` lO

and 11, the handle'portion BEL of thetorch is provided with 'anopening 'i8 extendedtransversely therethrough, in which a tubularinsert His fixedly arranged in any suitable manner. l 'The insert 1| is provided with a wall 'l2 intermediate A of its ends which divides the interior yofthe tubular insert into ytwo cavities 13- and T4. `The wall of each of the cavities referred to is provided with a tapered portion 'landxed valve-.mem-

bers 16 are arranged with the correspondingly tapered circumferential faces thereof in binding.

contact with said tapered wall portionsfl. The fixed valve member in each cavity i3 and 744 has a central opening formed therethrough,through which a valve stem Tl extends, thisvalve stem being provided with a head 'I8 Aat its inner endwhich is provided with a facing `element 19. The

opposite outer ends of the insert ll are i'nter-A nally screw-threaded, and annular nuts are g screwed into said screw-threaded portions against plates 8l which contact with the associated fixed valve members 'l5 so as to retain them inl place.

At the outer ends of the valve stems l'l armsf-` are fixed which are connected by a suitable' thumb" piece (not shown), whereby said arms maybe moved simultaneously to Voperate theV valvesin unison. Also interposed between the sleeve portion 82 of each of the arms'82 and the adjacent 1 plate 8l is a dished, resilient element which tends` to move the associatedvalve stem outwardly and I .y :.60

thus maintain the valve facing in contactv with the fixed valve member.

The handle portion of the structurefshown-in ing into the cavity 13 and the oxygen portlead- Figs. 10 and 11 is providedvwitha fuelgasfport f' 83 and an oxygen' port 8 4, thefuel gas port lead- 165 f' ing into the cavity'M (see Fig. 1 1); Also the head and facing element of each valveare pro-y vided with passageways 85 which are movablej into and out of registration with passageways 86 formed in the xed valve members `l, these pasgen port 88 that are formed through the-insert 'Il the torch and lead tol the mixerof the torch.`

1'zo sageways 86 in the fixed valve members being in communication with a fuel'gas port 8'! and an oxy-- i andjll..

-13 is divided into two separate` cavities` 90 and 9| the fixed valve members and thus provide fluid-x tight contacts between said lparts. Also it is obvious that when the valves are movedto the open position, fuel gas yand oxygen will 'pass through the registered passageways in the valve heads, valve facing elements, andy xed valve members to the ports 81 and 88 andthrough said'ports to the mixer of thetorch. l

The structure shown in Figs. 12 and 13 is the same as vthe structure illustrated in Figs. 10A and 1l, with the exception that' no insert, such as the insert 'Il of Figs. 10 and 11, is employed in the structure of Figs. 12 and 13. In Figs. 12 and 13 the transverse yopening 89 formed in the handle portion of the torch is shaped and arranged to receive the various parts already described as being located within the hollow insert 1| of Figs. 10 The transverse opening ofFigs. 12 and by a wall 9|', and the fuel gas port 92 and the oxygen port 93 are formed through they handle portion so that they extend through this Wall. Also the cavity 90 is placed in communication with the fuel gas port 92 lloy an aperture 94, while the4 cavity 9| `is placed in communication vwith the oxygen port 93 by an aperture 95. In the to force the valve form of the invention illustrated n'Figs. 1'2'and 13, the fuel gas port and the oxygen port are plugged at points forwardly of the cut-ofi means,

The operation of the as shown at 96 and 91. l

Figs. 12 `and. k13 is modified structure shown in the same as the structure of Figs'lO and 11, as

already described, and hence this operation need not be again explained.

We claim: v l j In a torch comprising a vhandle portion having longitudinal gas conduitsI therethrough and a transversely disposed recess therein', a mixer portion having conduits therethroughand a flame directing portion having a nozzle, the combination of a valve mechanismV conveniently located in the transverse recess in the lhandle portion for conducting gases from their'source of supthe valve mechanism one gas will be out ofibe4 fore the other gas is cutoff, and an independently controlled by-pass through the rotatable porthe source of ysupply and' Iply to the conduits of the mixerand controlling tion of thevalve mechanism for supplying gas i for a pilot light, constantly in registration with the conduit from the source of supply. I

ARTHUR J. FAUSEK. IRWING F. FAUSEK. 

